Home / 2,255.68-3,384.79-1,215.65

Finding the Fourth Proportional to 2,255.68, 3,384.79 and 1,215.65

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Solution

The fourth proportional to 2,255.68, 3,384.79 and 1,215.65 is: 1,824.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.68 : 3,384.79 = 1,215.65 : x
  2. Step 2: Convert to fraction form
    2,255.68/3,384.79 = 1,215.65/x
  3. Step 3: Cross multiply
    2,255.68x = 3,384.79 × 1,215.65
  4. Step 4: Simplify right side
    2,255.68x = 4,114,725.39
  5. Step 5: Solve for x
    x = 4,114,725.39/2,255.68
  6. Step 6: Final answer
    x = 1,824.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.